Watch List notes:

Foreign Coins and Medals, Russia, Nicholas I, silver medal commemorating the construction of the Blagoveschensk Bridge over the Neva, 1850, by A. Klepikov & A. Lyalin, double-headed eagle flying over bridge, rev. Minerva and Hercules cross water flowing from the urn of a river goddess, 75mm. (Diakov 594.1 [R2]), certified and graded by NGC as Mint State 62
Choice toned lustrous uncirculated, a superb very large silver medal. (5000 - 6000 GBP)